[1] Arp 85,Messier 51, NGC5194 and NGC 5195, The Whirlpool Galaxy in Canes Venatici
Photographer:
 
Al Brockman
Telescope:
 
Meade 14" SCT at f/10
Orientation::
  Ø23' x 18', m8.4, RA 13h29.9m, Dec +47°11'9”
Camera:
  SBIG STL-11000M at -12°C
Image Scale:
  1.09 arc sec/pixel, FOV:124 x 36 arc min
Mount:
  Paramount ME on ATS Portable Pier
Exposure type
  L 30 x 300" binned 2x2
Location:
  Ningaloo Skies Observatory, Exmouth, WA on 2009, 14 March
M51

Additional Notes: Spiral with large HSB companion on arm

Moon at 85% illumination made for a bright sky. Being low on my northern horizon at only 20* altitude, I had to image through 3.71 air masses! but it was worth it to catch this most beautiful of galaxies.

 
 
 
 
Design and production 2009 by Al Brockman